Car waxes and paint sealants, which to use?
Car waxes usually contain natural wax like carnauba. The better waxes contain a high percentage of carnauba by volume, as much as 40%. Carnauba waxes produce a rich deep look on dark colored vehicles and are preferred by most collectors and car enthusiasts, but does't last that long. They come only in a paste form beause the carnauba is too hard to make into a liquid. Any liquid wax claiming to have carnauba can only have a small percentage by volume, usually 3 to 5%.
Paint sealants are polymer based and are engineered to bond to the painted surface creating a synthetic barrier from UV rays and contamination. Paint sealants also last much longer than carnauba waxes and are easier to use.
More and more we see people using both for the durability of paint sealants and that rich deep finish you get from carnauba waxes. Use the paint sealant first, let cure for 12-24 hours then apply your favorite carnauba wax on top. Best of both worlds.